noun
conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases
Synonyms
noun
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
Synonyms
vacuum tube
thermionic vacuum tube
thermionic tube
electron tube
thermionic valve
noun
a hollow cylindrical shape
Synonyms
noun
(anatomy) any hollow cylindrical body structure
Synonyms
tube-shaped structure
noun
an electric railway operating below the surface of the ground (usually in a city)
Synonyms
Examples
- in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'
verb
provide with a tube or insert a tube into
verb
convey in a tube
Examples
- inside Paris, they used to tube mail
verb
ride or float on an inflated tube
Examples
- We tubed down the river on a hot summer day
verb
place or enclose in a tube